Have the CarMonitor for a year in the car with no deficiencies. Why this model? Reasonable price, high quality, distorting many settings without the music, many connection possibilities and 1 knob for the volume, you can operate "blind" while driving. Navi I disconnected because I very rarely a need. iPhone 4S, HTC One coupled only via BT is working properly, Music via USB (front connection) .... the sound is brute! Previously had the original speaker, increasing more than 50%! Now the front 2-way system with amplifier, rear nothing, active subwoofer in the trunk about Cinch, ...... Best Sound for years! Sound can be adjusted, zBTheater, concert, ..... or a private mess with more treble, bass, ..... in addition, you can still adjust the frequencies, where and how they overlap, so what more could you want! The "loading times", some say here, they were too slow! If I have a "normal" turn up the car radio that is of course much faster, here we have a small PC! Whether I start a stand PC, laptop or tablet, the Kenwood is faster, even with the USB stick it behaves DVD / CD is the time vl.gleich. Connections for 2 monitors in the 2nd row (children rejoice over them), reversing camera (would the more expensive model from Kenwood take) and the aforementioned 3 RCA for front, rear and subwoofer. DVD works without limitation, if you depend NOT connect the cable to the handbrake but to the body earth (was written by a user here, Thanks for the tip!) Also criticized was here that the radio only works with the ignition switched on? In general, most car radios are designed to continuous positive and IMPORTANT! Ignition Plus, that's when you turn the ignition key to the first position, since no ignition is switched on! Is at 99% of the cars that. Display color can not be selected, only the left part with press studs, "Home screen" you can rearrange and put your own background image. 2 small blemishes have been around. 1. How already mentioned by another user, the power button should be illuminated. 2.The Micro supplied is not particularly. (If anyone has a recommendation for me?) Conclusion: For little money you get a relatively large amount, the CarMonitor can I recommend everyone who wants to have a little above average.